[Exim] Block incomming email from specific host

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Good day to all,
i want to block email from a specific IP because i receive in my mail server a thousand of mails from specifc host,
i have exim with mysql 4.22 support, amavis, clamav and spamassasin

if anyone know how to make that please write in the list.

Best regards
Christos Ioannou
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